# WarmLink vs Bubble Level

The clearest difference is rating: Bubble Level at 4.5 against WarmLink's 3.5. Bubble Level also leads on review sentiment (43% vs 9%) and ratings volume (721 vs 2). WarmLink's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Bubble Level sells 10 in-app purchases, starting at $2.99 per month. WarmLink asks for nothing beyond the download.

Bubble Level holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: Bubble Level has 721 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 9% of WarmLink's written reviews are positive against 43% of Bubble Level's.

WarmLink ships an update every 4 weeks, Bubble Level weekly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | WarmLink | Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/warmlink/id1548602505/reviews) | **[4.5 (721 ratings)](https://appshunter.io/ios/app/bubble-level-angle-finder-ar/id1594066382/reviews)** |
| Number of ratings | 2 | **721** |
| Positive reviews | 8.7% of reviews | **43.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 62 MB | 43 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [展悦 梁](https://appshunter.io/developer/982085158) | [Jens Rieckhof](https://appshunter.io/developer/354266124) |

## What reviewers say

### WarmLink

[App page](https://appshunter.io/ios/app/warmlink/id1548602505)

Easily control and monitor your heat pump from anywhere. View real-time status, adjust settings like temperature and mode, and receive alerts for any issues. The app provides detailed temperature history and proactive background support from suppliers.

**Highlights:** Remote heat pump control, Real-time status monitoring, Temperature curve visualization, Failure alerts, Background supplier support, ON/OFF and mode settings

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-angle-finder-ar/id1594066382)

This utility app transforms your device into a precise bubble level and angle finder. It offers augmented reality measurement tools, a user-friendly interface, and Apple Watch integration for live readings. Ideal for DIY enthusiasts and professionals needing accurate surface leveling and inclination measurements.

**Highlights:** Augmented reality ruler and protractor, Precise angle measurements to one tenth of a degree, Effortless one-touch calibration, Clear and easy-to-read visual display, Apple Watch integration for live angle readings, Measures inclination and slope

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spirit Level Premium – Monthly | $2.99 | per month |
| Bubble Level Premium - Weekly | $2.99 | per 7 days |
| Bubble Level Premium - Monthly | $5.99 | per month |
| Spirit Level Premium – Annual | $14.99 | per year |
| Bubble Level Premium - Annual | $19.99 | per year |
| All features - No ads | $1.99 | one-time |
| Unlock all AR features | $5.99 | one-time |
| Discount Lifetime Premium | $14.99 | one-time |
| Bubble Level PREMIUM Lifetime | $19.99 | one-time |
| Bubble Level - Lifetime Premium | $29.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🔍 Accurate angle measurements
- 🛠️ Helpful for various tasks (telescopes, leveling, etc.)

**What reviewers complain about**

- 🤑 Expensive ad removal
- 🤖 Unreliable calibration
- 💤 Constant interruptions and ads
- 🚫 Unusable due to ads

**Reported bugs**

- App crashes on launch
- Measurement point behaves erratically

**Requested features**

- Ability to calibrate the app
- Option to change the display color


## Frequently asked questions

### Is WarmLink free?

WarmLink is free to download, with no in-app purchases.

### Is Bubble Level free?

Bubble Level is free to download, with in-app purchases available.

### Which has better reviews, WarmLink or Bubble Level?

Bubble Level is rated higher. WarmLink averages 3.5 out of 5 from 2 ratings, while Bubble Level averages 4.5 from 721 ratings.

### Do WarmLink or Bubble Level have ads?

Bubble Level shows ads; WarmLink does not.

### Which is updated more often, WarmLink or Bubble Level?

WarmLink ships an update every 4 weeks, and Bubble Level weekly. Most recently, WarmLink was updated on November 3, 2026 and Bubble Level on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*